The NK 2000 Project

The NK 2000 Project

Wednesday, October 1, 2014

A New Sense of Pride

I can't but help be proud of my new reubuilt transmission. Invisible to most people, at least to those who don't crawl under cars, the unit is a work of performance art that stands on its own merits. All thanks to Metric Mechanic. Here are a few photos I took today.  Shooting under a car on jack stands was a new experience to me and so the quality of images is, well, spotty:















Tuesday, September 30, 2014

Trannsmission Rebuild: Part III - Installation

I got a big box from Metric Mechanic with the transmssion enclosed last week, delievered conveniently to my door, and while I was out of town over the weekend Patrick at Midnight Motorsport worked hard to do the installation. After a brief fear regarding the choice we faced of different throw-out bearings (see previous post) we chatted about the issue and decided that the current BMW-recommened version HAD to work. Blind faith, I suppose.

After we removed my original Getrag 232, we had put a donor tranny in the car so I could still run it. It was a direct plug and play. The unit came from a '74 2002 but its exact provenance was unknown. The gears shifted smoothly but the transmission whined like a banshee at high speeds.


Of course, I shouldn't complain too much. My own 232 was suffering from terminal Synchro Syndrome, meaning that every time I changed gears I had to match the RPMs perfectly. Not a great way to have to drive such a fine old car, listening to crunches that sounded like the roll of sea rocks under a stormy shorebreak.

Anyhow, while I flew south for some warm weather and to see college friends, Patrick got to work. Just looking at Metric Mechanic's meticulous refurbishing of my old Getrag must have been a hoot for him all weekend long; I envy often envy his profession.







I have to admit, my car didn't look entirely bad with no tranny attached. I had heard when I bought her that she's been stored for 25 years unused. Maybe this factoid was true and maybe not, but I'm not complaiing.


And so the unit eventually  made it to the underside of the car.


All is now right with the world. My only worry is that I have a sudden compulsion to disobey every posted speed limit I see on the roads.



Monday, September 29, 2014

Transmission Rebuild Part II: A Study in NK Throw-Out Bearings

While re-installing my original tranny after its rebuild, we decided to swap the throw-out bearing. To our surprise, the correct bearing (according to REALOEM) is quite a bit different than the original one that dates from 1967, and in fact somewhat less tall.  It works fine as it seemed self-asjust in relation to the slave cylinder when the tranny was put back in the car.  Here is a pic of the three bearings - my original one on the left, the new one in the center that I am now using, and the later '02 style bearing at the right, which is used in the Series II NKs, I believe.

Fascinating how things change, for reasons that are probably now lost to history.

Thursday, September 4, 2014

The Transmission Rebuild: Part I

I thought about this project for a long time before finally taking the plunge.  My original transmission was in excellent shape, all in all, but because it's an early Getrag 232 with Porsche syncors, age and use had slowly but surely devoured said synchros. While they hadn't gotten any worse during the years I have owed the car, inevitably they were a real downer and prevented me or any other driver from fully appreciating the M10 motor.

So I sent the transmission off the Jim Rowe and the crew at Metric Mechanic for a rebuild. Their work didn't come cheap, but then you get what you pay for in cars as well as in life.

Yestersday the unit arrived back at my house courtesy of UPS.  I opened the box and discovered a work of art that belongs, surely, in the Seattle Art Museum as a stand-alone object to venerate with reverence.


 The transmission looks too pretty to unwrap.

When I sent the gearbox I included the selector rod, because the holes in the fork were worn and I wondered if Metric Mechanic could do anything about this issue, which caused play in the shifter.  They refreshed the rod and now I can't wait to get it back in the car and see how she shifts.


 I really had no idea when I shipped the selector rod that they would be able to perform such delicate surgery.

Now I have only to wait until the proper time for reinstalling the transmission.

Tuesday, August 19, 2014

Matching Numbers


Freshly Sealed

Two different seals went on the car this week- the trunk seal, which was long overdue to be changed, and the passenger side door wing seal, which had pretty much disintegrated with the passage of decades.

The door seal was easy enough to install, after figuring out how to defy gravity and allow that nasty but effective black 3M sealant to dry.


I have heard that this seal is NLA but W&N still has them in stock.


The trunk seal proved to be more problematic with its own gravity issues. I even thought of taking the trunk off the car to do the installation, but in the final analysis it was easier to take the problem to Patrick at Midnight Motorsport and have him do the work. It turned out nicely.



Saturday, August 9, 2014

Rear-End Records Deleted

I'm the first person to admit it - occaisionally I get absent-minded. This used to be especially distressing when I would forget to close the trunk before lowering the garage door.


What happened is that the bottom of the metal door track, which slides backward when the door is going down, used to hit the rear trunk trim. Thus I had a record, over the years, of how many times I had done this.


Depending on the position of the car at the time, the ding that that resulted when I lowered the door used to hit near the center-left of the trunk trim.  Here I count around six episodes, although there is evidence of more out of the picture frame.

Anyhow, the cost of a new piece of trim isn't really very high. I also replaced the small trim connector pieces, which were aged and nasty.  Result - a pristine, record-free transom.

I

I only attempted this fix after going for at least a year ding-free, proving that an old person CAN learn new tricks.